Gripping mechanism for a gas tank valve



FIG. 1 is a top plan view of a gripping mechanism for a gas tank valve showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a top perspective view thereof; and,

FIG. 4 is a bottom perspective view thereof. 

CLAIM The ornamental design for a gripping mechanism for a gas tank valve, as shown. 